There are two ways to illustrate the two-string structures. The first one...

...And the second with digits

1000

Given these conditions, you will have 24 x 16 = 384 fingering scales, out of
which the two scale groups that only have a range of one string are excluded
(0000 and 1111, which is 2 x 24 = 48). This will give a result of 384 - 48 =
336 scales, which will all be modeled below.

Zoli SĂˇpi also found a very significant correlation in the picking algorithms.
Although constant alternate picking is what you always stick to, one can
differentiate between alternate picking algorithms in relation to the given
fingering combination, namely either starting the alternating picking sequence
with